Answer:
Explanation:
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In this case, since the formation of water from hydrogen and oxygen is:
Whereas we find a 2:2 mole ratio of hydrogen to water. In such a way, by using the Avogadro's number, the aforementioned mole ratio and the molar mass of water (18.02 g/mol), we obtain the following grams of water product:
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Answer:
4204 K
Explanation:
Step 1: Data
<em>Given data</em>
- Density of uranium hexafluoride (ρ): 0.5820 g/L
- Pressure of uranium hexafluoride (P): 0.5073 atm
<em>Required data</em>
- Universal gas constant (R): 0.08206 atm.L/mol.K
- Molar mass of uranium hexafluoride (M): 352.02 g/mol
Step 2: Calculate the temperature of the gas
We will use the following expression derived from the ideal gas equation.
P × M = ρ × R × T
T = P × M/ρ × R
T = 0.5073 atm × (352.02 g/mol)/(0.5820 g/L) × (0.08206 atm.L/mol.K)
T = 4204 K
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Answer:
Redox but not combustion
Explanation:
2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g)
This is a redox reaction, because the oxidation number of K increases from 0 to +1, while that of H decreases from +1 to 0.
It is not a combustion reaction, because combustion is the reaction
with O₂.
The equation for the combustion of potassium would be
4K(s) + O₂(g) ⟶ 2K₂O(s)
The option which accurately defines kinetic energy from the choices above is:
the energy an object has because of its motion
The correct answer choice is option c
In order words, kinetic energy is that type of energy which a body or an object posess due to its relative motion.
<h3>What is energy?</h3>
Energy can simply be defined as the capacity of doing work.
Energy is a derived quantity; meaning that it is obtained from the combination of fundamental quantities.
The unit of energy joules.
Other examples of derived quantities just like energy too are:
- Volume
- Speed
- Acceleration
- Density.
- Upthrust
- Momentum
- Momentum
- Power
- Pressure
- Force
Below are some few forms of energy; these are:
- Kinetic energy
- Potential energy
- Mechanical energy
- Solar energy
- Light energy
- Chemical energy
So therefore, the option which accurately defines kinetic energy from the choices above is:
the energy an object has because of its motion
Learn more about energy:
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